Cutter guard for agricultural implements



1931. A. 1.. GILLIAM I g 3 CUTTER GUARD FOR AGRICULTURAL IMPLEMENTS Filed Dec. 14. 1929 2 Shoots-Sheet l 3. 30 33 Inventor A itorney Jan. 20, 1931. A. L. GILLIAM 1,789,403

CUTTER GUARD FOR AGRICULTURAL IMPLEIENTS Filed Dec. 14, 1929 2 Shoots-Sheet 2 I van tor sywm A ttorney Patented Jan. 25), 1931 AUGUSTAN L. GILLIAM, or GILLIAM, ivrrssoonr CUTTER GUARD FOR AGRICULTURAL I MPLEMENTS Application filed December 14,1929. Serial No. 414,114.

This invention relates to cutter guards for agricultural implements including mowing machines, reapers and binders.

An object of the invention is to provide an improved ledger plate construction that pre- :vents'movement of. the ledger plate and fur thermore provide for quick andeasy detachment for replacing worn ledger plates.

Further objects of the invention are topro- 1U vide a device of the character referred to which is strong, compact and durable, thoroughly reliable for its intended purpose, .very

simple in its methodof assembly, which requires very little change from standard conexpensive to manufacture and apply.

With the foregoing and other objects in view, the invention consists in the novel construction, combination and arrangement of parts as will be hereinafter more specifically described and illustrated in the accompanying drawings, wherein is disclosed an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to without departing from the spirit of the claim hereunto-appended.

In the drawings wherein like reference characters denote corresponding throughout the several views: r r

Figure 1 is a top plan view, partly broken away, of a knife guard with the present invention applied thereto,

' Figure 2 is a side elevation thereof,

I plate removed from the guard,

Figure 1 is a central longitudinal, vertica section thereof,

Figure 5 is a side elevation of the guard illustrating the assembling of the ledgerplate therewith,

Figure 6 is a vertical section taken substantially on the line 66 of Figure 1, and looking in the direction ofthe arrows.

Referring to the drawings in detail 7 instruction of knife guards, and which is inparts Figure 8 is atop plan view ofthe ledger:

dicates generally the body portionv of the guard projecting from the rear of which is V in attaching armor extension; 8 whichhas a flat upper face 9'at its rear-end. Thereis an opening-10 extending through the extension8 at approximately the center of'the fiat upper face 0 by whichthe guard is. attachedtofhe agricultural implement. 1

Ari-upstanding shoulder 11-is formed. at,

the inner end of the upper face 9 and "formsa shoulder or abutmentwhen the, guard isattached to the machine; WVhere the extension .8 merges with the body portion 7 there are formed a pair of laterally. projecting wings 13, 11 on the opposite sides ofthe body portion. 7

Each ofthe wings 13, 1 1, terminatesgini The body portion 7"further includes base l8 cupped at its center as at 19. The walls of j the base 18 on the sides of they cupped portion are below the level ofthe upper sides wings 18,14 as is indicated at 20.

' The base portion 18 of the bodyportion is "curved as at 21 and merges into a point 22 of the from which projects an. upwardly inclining late 23- which is formed integral-with the base 18 provides a pocket between the-upper edge 20 and the plate. r

hrough the center of the plate adjacent the-point of juncture with the base l8,'there is formed a. peripherally threaded opening 2 5 that receives a set screw 26. The length of the set screw 26 is such that when it is screwed ase; The plate 23 being spaced from the flush with theupper surfaceof the. plate it will project into the pocket 19.

At theouter end 'of the topedges ofthe sides 20 there are formed upstanding shoul ders 27 which are spaced below the plate.

and disposed rearwardly of the forward end of said plate 23. The ledger plate is indicated generally at 28 and has diagonal. sides 29 and 30 and is flat on both top and bottom surfaces. v 7

On the inner end of the plate is astraight edge 31. At its ends the straight edge 31 merges with diagonal beveled edges 32, 33 which are engageable with the beveled shoulders 15, 16. The plate 28 on its forward edge is formed with an integral tongue 34:.

The thickness of the plate 28 should be the thickness of the upstanding shoulders 15, 16. In assembling the plate in the guard of the present invention, the tongue 34 extends into an arcuate pocket 35 formed in the forward portion of the cup shaped portion 19.

The forward straight edges 36, 37 will abut the shoulders 27 and thebeveled portions 32, J 33 will engage-the diagonal shoulders 15, 16. The intermediate straight edge 81 fits in the other end of the plate for disposition between the first named shoulders, a set screw threaded in the opening for engagement with the tongue for securing said other end of the plate on the body portion, the marginal edges of the plate adjacent opposite sides of the tongue being engageable with the first named f space 17 between the diagonal shoulders 15,

16. Of course the screw 26 will have to be removed or retracted to prevent interference with the tongue 34: while the plate 28 is being assembled in the guard.

From an inspection of Figure 5 of the drawings it will be seen that there is ample space provided above the shoulder 17 so that the plate maybe manipulated to engage the diagonal sides 32, withthe shoulders 15, 16.

After the diagonal sides are engaged with the shoulders, slight pressure will cause thestraight edges 36, 37 to engage with the shoulders 27', the side edges 29, 3O resting upon the upper side edges 20. When the plate 28 is thus assembled, the set screw 26 is screwed downwardly whereby the plate is locked-in operating position. a

It is to be understood that by describing in detail herein, any particular form, material, arrangement, it is not intended to limit the invention, beyond the terms of the claim, or requirements, of the prior art.

Havingthus described my inventio-n,'what I claim as new is:

A cutter guard of the character -described comprising a body portion, means for securing the body portion on a support, an integral plate extending upwardly and rearwardly from an intermediate portion of the body portion, said plate having a threaded open- 2 ing extending therethrough adjacent itspoint of mergence with the body portion, aligned,

formed integrally on'the body portion in spaced relation beneath the plate and rearwardly of the forward end of the plate, diagonally disposed beveled shoulders spaced rearwardly of the first named shoulders and formed integrally with the body portion, a plate having beveled, diagonal edge portions engageable with the beveled shoulders in a manner to retain one end of the plate on the body portion, an integral tongue on the transversely spaced, upstanding shoulders 

